PHP in an SQL - Multiple

SELECT id AS value, name AS text
FROM jos_some_table
WHERE id != < ?php echo JRequest::getInt(id); ? >

SELECT value, text
FROM jos_contact_enhanced_cv
WHERE value = "'.JRequest::getVar('value').'"

eval('$this->value'." = '".$this->value."';");

if($this->params->get('isAdmin')){
	//echo '<pre>'; print_r($this); exit;
	$query	= 'SELECT m.from_id FROM #__contact_enhanced_messages m '
				.	' INNER JOIN #__contact_enhanced_message_fields mf ON mf.message_id = m.id'
				.	' WHERE mf.id='.$db->Quote($this->field_id);
	$db->setQuery($query);
	$user	= $db->loadResult();
	$user	= &JFactory::getUser($user);
}else{
	$user	= &JFactory::getUser();
}

$db->setQuery( eval($this->value) );

return 'SELECT name AS value, name AS text FROM jos_zoo_item WHERE id = ' . JRequest::getInt(item_id);